I have a iphone 3gs..it is unlocked and jailbread with 4.1.0 firmware and 6.15.00 baseband... I met with and accident to with me some sctrahces came to the iPhone too...i noticed that everything is working fine except the SINGAL its...all time no singal... i restored my 4.1.0 firmware again with ultrasn0w...unlocked and i got "SIGNALS" for some minutes and after same No service. I use INDIAN provider Airtel. What u guyz suggest..some hardware porblem or porblem with Ultras0w..Do i unlock using redsn0w..? Well , Help appreciated.